401421311 has 4 divisors (see below), whose sum is σ = 408995352. Its totient is φ = 393847272.

The previous prime is 401421299. The next prime is 401421329. The reversal of 401421311 is 113124104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401421311 - 2⁶ = 401421247 is a prime.

It is a super-2 number, since 2×401421311² = 322278137849917442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401421311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401421331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3786941 + ... + 3787046.

It is an arithmetic number, because the mean of its divisors is an integer number (102248838).

Almost surely, 2^401421311 is an apocalyptic number.

401421311 is a deficient number, since it is larger than the sum of its proper divisors (7574041).

401421311 is an equidigital number, since it uses as much as digits as its factorization.

401421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574040.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401421311 is about 20035.5012665019. The cubic root of 401421311 is about 737.6779605398.

Adding to 401421311 its reverse (113124104), we get a palindrome (514545415).

The spelling of 401421311 in words is "four hundred one million, four hundred twenty-one thousand, three hundred eleven".